[TechAssist] Re: Zenith 9-1389 Goes BLACK (Sometimes GREEN)
- From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 16 Nov 2001 22:50:34 -0800
Thanks again Gary,
I just hope I will be lucky enough to have it act up while
I'm there! I modified my B&K CRT tester to always apply the
~400 or so volts to G2 (as well as the cathode) when using
Remove Shorts function.
I guess they didn't think that G2 shorts ever happen when
they designed the tester.
So I may as well tap the neck and give it a shot just in
case.
Bil
----- Original Message -----
From: "GARY & JUANITA" <GJCHAMBERS@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 16, 2001 1:49 PM
Subject: [TechAssist] Re: Zenith 9-1389 Goes BLACK
(Sometimes GREEN)
>
> I have seen these also short the g2 pin on crt. i have an
old tube power
> supply that goes to 400v that i used to remove the g2
short with before.
> I just momentarily touched the + to g2 while set was on.
> I would look at the g2 voltage 1st and see if it drops
when this happens.
> may not be your problem.
> gary
> Gary Chambers
> Chambers T V
> Bradenton,Florida
> Since 1982
> ----- Original Message -----
> From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Cc: <DAMON101@xxxxxxxxxxxxxx>
> Sent: Friday, November 16, 2001 4:51 PM
> Subject: [TechAssist] Re: Zenith 9-1389 Goes BLACK
(Sometimes GREEN)
>
>
> >
> > Damon,
> >
> > Thanks for the tip. I know about using the wire wrap
for H
> > to K shorts in CRT's. Haven't heard of a case where
this
> > type of short causes the screen to go black as well as
> > bright green (red or blue). Appreciate the help,
> >
> > Bil
> >
> >
> > ----- Original Message -----
> > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, November 15, 2001 7:22 PM
> > Subject: [TechAssist] Re: Zenith 9-1389 Goes BLACK
> > (Sometimes GREEN)
> >
> >
> > >
> > > Take a couple feet of insulated wire so you can create
and
> > isolated heater
> > > for this. Remember one of the techs here said that
they
> > had "perfected the
> > > self shorting crt"? You may very well have this
problem.
> > >
> > > 2 or 3 wraps around the core of the IHVT and you
should
> > get about 6 vpp of
> > > heater voltage, cut the copper trails from the orig
heater
> > connectors and
> > > install the wire to the crt socket.
> > > I don't know if this is what you will find when you
get
> > out there, but take
> > > it just in case.
> > >
> > > Damon Brunger
> > > damon101@xxxxxxxxxxxxxx
> > > Telrad Electronic Services
> > > Ft Wayne, IN 46815
> > > ----- Original Message -----
> > > From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
> > > To: ".Techassist" <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, November 15, 2001 6:06 PM
> > > Subject: [TechAssist] Zenith 9-1389 Goes BLACK
(Sometimes
> > GREEN)
> > >
> > >
> > > >
> > > > Zenith SL3543RK
> > > > Chassis 9-1389
> > > > 1994 35" TV
> > > >
> > > > Picture goes black - Sometimes it goes green
> > > > Intermittent problems
> > > >
> > > > This is an out of town service call so it would be
very
> > > > helpful if I could be prepared before going there
(no
> > tips
> > > > at RepairWorld, WinStips, etc.)
> > > >
> > > > Thanks,
> > > >
> > > > Bil
> > > >
> > > >
> > > > *****************************************
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